How to address the error 'TransportProtos' symbol unresolved in ThingBoard?

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Check for missing dependencies - Make sure all dependencies required for the ThingBoard installation are present and installed correctly. You can refer to the official ThingBoard documentation for the list of dependencies required.

Check Java version - Ensure that you are using the correct Java version required by ThingBoard. ThingBoard requires Java 8 or higher. Check the Java version using the ‘java -version’ command in the terminal.

Update ThingBoard - If you are using an older version of ThingBoard, update to the latest version to fix the error. You can download the latest version from the official ThingBoard website.

Rebuild the application - Try rebuilding the application from scratch by removing the build directory and running ‘./gradlew build’ command again.

Check configurations - Ensure that all configurations required by ThingBoard are present and are correct. For example, in case of error related to TransportProtos, check the transport configuration in ThingBoard configuration file.

Raise an issue - If none of the above solutions work, raise an issue on the official ThingBoard GitHub repository or forum for further technical assistance.